DE1573765B2 - TESTING SYSTEM FOR LONG ELEVATED CYLINDRICAL WORKPIECES - Google Patents

Description

1 2

The invention relates to a test system embodiment in connection with the

for elongated cylindrical workpieces, explained in more detail in the figures. In the figures shows

the workpieces in their longitudinal direction at one in FIG. 1 is a plan view of a test system for testing

a test head provided by a test station by pre-testing elongated workpieces,

Push rollers one in front of and behind the test station 5 F i g. FIG. 2 is a front view of the FIG. 1 illustrated

sensitive feed device are passed arrangement,

the, both horizontally and vertically. 3 a partially broken enlarged

vertical direction with respect to a base frame fe- plan view of a feed device in the test

are stored in a different way and are facing each other,

the rollers are held in engagement. io FIG. 4 is a sectional view corresponding to FIG

Such a test facility is from the USA.-Pa- section line 4/4 of FIG. 3,

publication 3 121 325 known. It is a spring-F i g. 5 is a top view of the

de storage of the test station itself provided, and seen feed means,

the test station has opposite F i g. 6 is a sectional view corresponding to FIG

Idle rollers on which the positioning of the long- 15 section line 6/6 of FIG. 5,

serve stretched workpiece. The resilient position- F i g. Fig. 7 is an end view of the Fig. 7 for advancement tion of the test station allows, within certain limits, the device serving workpieces according to FIG. 5, an adaptation to such workpieces, the di- F i g. 8 is an enlarged view of part of a have bends. · - - testing system, the direction of movement being the factory-off U.S. Patents 1,887,434 and 20 pieces is shown,

3 074 605 it is known to process long F i g. 9 is a sectional view corresponding to FIG

elongated tubes these at the same time to their section line 9/9 of FIG. 8th,

Longitudinal movement a rotary movement about its longitudinal Fig. 10 an enlarged side view of the test axis by forcing the longitudinal head in the test station,

transport effecting feed rollers with their 25 Fig. 11 a sectional view corresponding to the

Axes of rotation oriented obliquely to the longitudinal direction, section line 11/11 of FIG. 8.

are. One shown in FIG. 1 and 2 shown test system for

From the Belgian patent 637 468 it is known to test elongated workpieces and to scan elongated tubes in such a way to draw defects and classify the defects that the tubes in their 30 workpieces are moved in a workpiece supply and longitudinal direction Simultaneously with the chassis group 11 , a workpiece infeed can be rotated around its longitudinal axis, so that a part 12, a workpiece inspection station 13, a helical workpiece output section 14 extending around the tube and a work scanning path results. With this type of scan piece-separating group kön- 15. In the vicinity of the inspection station to deflections NEN the elongated tool 35 13 control group 152 is provided, which make the one-pieces particularly unpleasant noticeable laßteil 12, the inspection station 13, the output section and the Make it difficult to scan the workpieces. 14 and the separation group 15 controls accordingly.

The object of the present invention is the supply rack 11 has, according to F i g. 1 one

a testing system of the type mentioned at the outset to sheep- a plurality of spaced apart fen, in which also bent workpieces on rings- 4 ° inclined frame parts 17, on which the work-

in order to be able to be scanned without being stored on the test pieces and due to the force of gravity

Station excessive demands with regard to an input part 12 are fed. Vertical beams

constant adaptation of the test head to a self 19 are provided to the inclined frame parts 17

to keep constantly changing position of the workpiece in the.
Test station must be provided. 45 With reference to F i g. 1 to 4 has the inlet

This object is according to the invention characterized in sections overall 12 has a lower part 20 dissolves with a base plate, that the resilient mounting of the workpieces 21 on horizontal U-sections 22, 23. The base through a plurality of opposite an elongated plate 21 has a plurality of rectangular openings base plate as the base frame resiliently mounted on top 24, in which a plurality of workpiece feed groups arranged in front of one another takes place, 50 push or drive groups 25 are arranged. There are four feed groups 25 , which can be moved independently of one another, are arranged so that the feed rollers in the front of the inlet section 12 and two in the inspection feed groups with parallel and inclined stations 13. Each workpiece feed group has a rectangular oscillating plate oriented to the direction of rotation 26, which are arranged by the vertical that the angular position of the rotary 55 right and horizontal springs 27 is held tion axis of the feed rollers with respect to the front and floats on this. A circular roller thrust direction is adjustable and that the counter-carrier plate 28 has a centrally protruding projecting rollers on the one hand feed rollers, on the spindle part 29, which on the other hand are idle rollers in a central opening. rectangular oscillating plate 26 is mounted. A turning

The oblique orientation of the feed rollers arm 31 is attached to the carrier board plate 28 and

acts in a manner known per se, a simultaneous one protrudes outwardly beyond the oscillating plate 26.

Rotation of the workpieces around their longitudinal axis. By- A pair of bearing blocks 32 are attached to the circular

Bends of the workpieces are fixed by the resilient roller table 28. A roller 34 is between

Storage of the one behind the other arranged feed the bearing blocks 32 and is of a groups balanced. In order for an exact front 65 shaft 35 is carried, which rotates in the bearing blocks

feed of the workpieces at the test station and 32 is stored. The shaft 35 has an elongated

thus achieves a more reliable test. Shank part 36 which extends over a bearing block 32

The invention is extended below with reference to a drive connection with a

■ 3 4

extendable drive shaft 37. The roller 34 from Me- With reference to F i g. 1 and 4 are the Niedertall, Rubber or other suitable material is support members 56 over each of the workpiece feeders of the shaft 35 and is driven by it groups 25 at a distance along the inlet section ben. The axes of rotation of the rollers 34 of all workpiece-provided. Each hold down group 56 is of Feed groups 25 are carried in a predetermined 5 of the base plate 21 and clamps and holds th angle to the path of movement of the workpieces 18, the workpiece 18 between the guides 21 and through the inlet section 12 and the inspection against the inclined feed rollers 34. Each lower station 13 set. This angle, made by the support group 56, has a pneumatic cylinder Diameter of the workpieces is predetermined, is 57 on, which is arranged directly above the line of the workpiece changeable to adjustably the helical io movement path, a roller holding movement control of the workpiece, such as the follow-up and carrier 58, with the piston rod of the pneumatic will be explained. matic cylinder 57 connected and a pair

An adjustment rod 40 extends over the idler rollers 59, 60 from each of the brackets

Length of inlet section 12 and is rotatably carried at 58. For each cylinder 57 there is one

each of the pivot arms 31 by fork-shaped arms 15 special ones controlled by a solenoid arrangement

members 41 and shoulders 42 are provided on the rod 40 of the valve device. Such a valve

bound. A dial 43 is rotatable by the solenoid control device 61 shown in FIG. 4 dar-

Base plate 21 held and is placed on one end of the.

Adjusting rod 40 applied with a thread so that the hold-down rollers 59, 60 are in the holder Rotation of the dial 43 causes the 20 53 to be rotatably mounted and against the movement adjustment rod 40 are held in the longitudinal direction in the ratio piece 18 so that they can move freely moved to the inlet section 12 and thus equal and equal to the angle of the helical movement all roller support panel plates 28 rotates, can follow movement that occurs during the movement of the to the angle of inclination of the rollers 34 in the one workpiece 18 results. The axes of rotation of the rollers Let section 12 and in the inspection station 13 a 25 converge in their holder approximately in the Rota position. center of the workpiece. Each hold-down cycle

Motors 45 are attached to the bases of the entrance liner 57 is supported by a pair of support posts 65 and sections and the inspection station near support arms 66 . The arms 66 of each of each workpiece feed group 25 are rotatably attached at one end to the top of a support and have drive shafts 46 attached to the upright posts 65 and coupled to elongated shaft portions 36 of the roller shafts 35 at the other end Carrier plate 67, around which are swayed and which they drive through the extendable drive effect of their corresponding vibration shaft 37. To accommodate the extendable drive shaft plate 26 on which the support posts 37 are held with internal and external keyways. Each hold-down roller bracket 58 see parts 47, 48 which are telescopically displaced 35 connected to tubular guides 68 which can slide on the support posts 65 to accommodate changes in the spacing between the rollers 34 and the motor shafts 46 and which can be seen from the roller bracket 58 prevent each other when the inclination angle of the rollers 34 rotate.

is changed by the setting wheel 43. A plurality of bridge girders 70 is on the

Extendable propshafts 37 are attached to each end 40 of the inlet section base plate 21 and they are

with the roller and the motor shafts 35, 46 through essentially with the inclined frame parts 17

Cardan joints 49 coupled to prevent a non-alignment of the workpiece storage and feed frame 11

direction of the roller and the motor shafts 35, 46 balanced. Inclined parts 71 of the bridge girders 70 are

to be able to. from the ends of the frame parts 17 at a distance

Guide parts 51 are arranged on the base plate 21 and slope downwards from just above ordered and in a parallel spacing relationship between the frame parts 17 to just above the workpiece on either side of the path of travel of the guides 51 of the workpiece inlet section 12. Workpieces 18 arranged. The guide members 51 are on. A plurality of workpiece lifting arms 72 are on extend through the entire inlet section 12 of a jack shaft 73 mounted rotatably in the and are movable over time, mounted around different star 50 bridge girders 70. The lifting arms 72 Überken of workpieces to be able to be adapted. bridge the space between the frame parts and The distance between the guide parts 51 is the inclined bridge parts 71. A lifting cylinder 74 expediently lV2 times the diameter is attached to the input section lower part 20 of the workpieces, with a wheel 54 for adjustment and having a piston rod 75, which can be rotated with is provided. The setting wheel 54 is rotatably connected to 55 a lever 76. The lever 76 is with a threaded spindle 55 and is fixedly connected by the jack shaft 73 and rotates the shaft the lower part 20 held. The spindle 55 is connected to the 73 when the cylinder is guided by a control valve 77 51 connected and shifts it is made. The arrangement of the control valve 77 and ben in the longitudinal direction when the wheel 54 is rotated of the lifting cylinder 74 so that when the solenoid will. Cam bolts 60 775 of the control valve 77 are energized on the guide parts 51, 52 attached. A mechanism in the form of cam- the lifting cylinder 74 is actuated to the lifting arms kenbolzen 52, which are attached to the guide parts 51 to move 72 in their downward positions, which in and in diverging cam slots 53 in solid lines in FIG. 7 are shown and, if the the base plate 21 is provided, solenoid 77 s is de-energized, the lifting arms to move the guide plates 51 laterally when 65 in their upper positions shown in phantom Dial 54 is rotated to lift the guide members.

51 to move by a threaded rod 55, the A plurality of limit switches 95 for detecting the

is connected to the guide parts 51. The presence of a workpiece is always

5 6

posture group 56 provided, as shown in FIG. 3 shows. The cylinders to hold their respective hold-downs against the workpiece to detect the presence of a workpiece when a brine-provided switch 95 is energized on the lower part 20 or 93 s of the valve 93 of the one load section and indicates the load Oscillating plates 26, 88 are each for independent

activity arms 95 α mounted between the guide 5 gigen movement, so that workpieces that share 51 extend upwards and are not perfectly straight, are moved in constant neighboring workpiece, if such a hard relationship to the fixed special coil enters in front of the space between the guide parts and can be pushed upwards. Each hold-down falls on one of the drive rollers 34. The actuation station, which are α of the feed and Niederhaltegruparme 95 disposed in front of the respective Niederhaltegrup- io pen 25, 56 and of the hold-down arms 89 gebilpen 56th Usually interrupted, with the probe 104 between the arms, contacts of the limit switch 95 are connected to the solenoid is held by a separate oscillating plate, coils 61 s of the pneumatic valves 61, and moves in all the directions necessary and when the contact paths through a workpiece are dig to be closed to the bend or curvature of the workpiece, the relevant sole 15 workpiece during its movement, noidspulen operated. In this way, with reference to Figs. 7 to 11, an inspection

Idle rollers 59 and 60 on each hold-down and marker group support frame 101 group so that they are positioned with the workpiece in engagement between the hold-down arms 89 and when the workpiece is held between the guides by the swing plate 88. A probe stanchion is located at the relevant point. The workpieces 18 ', 18 ", etc., which are held on the work support frame 101 and are resting vertically in the piece supply frame parts, roll due to their support frame 101 with the aid of a hand crank, gravity to the inlet section 12. The first lead screw group 103 adjustable to adapt work-workpiece 18 'in the group of workpieces to pieces of different dimensions. When there are no workpieces supported on 105 which are attached to the piston rod of a probe end roller 34 in the inlet section, rotating adjusting cylinder 107. The shaft 105 becomes the lifting cylinder 74 which lifts the lifting arms to the work perpendicularly along its longitudinal axis in guide bushing 18 ' the inclined bridge part 71. sen 106 is moved carried by the carriage 102. The lifted workpiece 18 'rolls through ch hard. A pin 80 projects laterally from the shaft 105 via the guides and force out the Vorschubroi- and is slidably held in a perpendicular angeordlen 34 to move at least some of the actuating Neten slot 81 to prevent rotation of the shaft supply arms 95 a-98 α and thereby causes the 105 to prevent downward movement regardless of its perpendicular position to the corresponding hold-down rollers.

gene and the workpiece against the feed rollers 34 35 A fork group 82 connects the search probe 104 ■ press. The feed rollers 34 give the work with the end of the shaft 105. This fork group piece by their inclined position includes both a rotary and an adjustment housing 83, which is attached to the end of a longitudinal feed movement by the single shaft 105, an outer oscillating housing let section. The degree of inclination of the RoI 84, an intermediate oscillating housing 85 and an inner 34 determines the value of the linear movement at 40th oscillating housing 86, which the search probe 104 every full revolution of the workpiece. With which holds. The housings 83-86 are partially inserted into one another as shown in the example which is used herein for purposes of illustration. The housing 83 has three turns, the inclination of the rollers is such that 76 mm angular parts, which are imparted with the parts of the housing (3 ") of linear movement per revolution, overlap 84. Fastening devices 87 are on the. The units of linear movement per circumference- 45 intermediate housing 86 fixed and sliding within rotation are therefore adjusted by changing longitudinal slots 87 s in the adjustment housing 83 angerung the inclination angle of the rollers 34 with arranges a movement of the outermost housing using the adjustment wheel 43. While the work - 86 rotates too piece in relation to the adjustment housing 83 and moves further in the longitudinal direction. Fastening pins 87 are provided in the slots, the pivotably mounted hold- downs 50 87 s are provided and act with them so that they roll together 59, 60, which grip the workpiece , from, so men that the relative movement of the housings 83, 84 that it limits the resulting movement of a point will. According to FIG. 10, the housing fits snugly into the housing 83 on the surface of the helically moving 84 and prevents the workpiece from coming into contact. tive rotation of the housing 83, 84, while a

With reference to F i g. 5 and 7 shows that sliding against one another is made possible. Joint inspection station 13 two workpiece feed or pins 117 connect the outer floating arrangement of drive groups 25, both on a single housing 84 with which is also floating Oscillating plate 88 are held on the orderly intermediate housing 85 and allow a horizontal and vertical springs 78 held relative rotation of housings 84, 85 about an axis is. A pair of hold-down arms 89 with pivotable 60 which is parallel to the path of movement of the workpieces. Rollers 90 is carried by the rocker plate 88. Fastening pins 118 connect the intermediate and they are above each of the feed rollers 34 in housing 85 and the inner housing 86 and gestatder Inspection station 13 provided. The lower one relative rotation of the housings 85, 86 by one support arms 89 are rotatably carried by the oscillating plate axis, which is transverse to the direction of movement of the work and have lever arm extensions 91, 65 pieces and to the axis of rotation of the housings 84, 85 which is rotated by the piston rods of the cylinder 92. The outsides of the housing 85, which are parallel will. A solenoid operated control valve to that determined by the fixing pins 117 is connected to the cylinders 92 and actuated axis of rotation, are at a distance from the inner

7 8

surfaces of the housing 84 are arranged so that although only one test station 13 is shown, rotation of the housing 85 in the housing 84 is clear that any number of such stems are possible. In the same way, the end faces can be provided functions. For example, a plurality of inspection stations and markings of the housing 85 can be arranged on the housing 86 at a distance from the inner surfaces so that the group can rotate in the longitudinal direction of the movement path of the housing 86 in the housing 85. With the workpiece along the end of the inlet section of this gimbal arrangement, the housing 12 can be spaced or they can move freely in all directions along the long input section 12 spaced from one end of the support arm 105 and the work - lie different. Follow with a large number of in a longitudinal direction, even if it should move in the transverse direction at a distance from each other to its main direction of movement. Stations, each station only checks part of one. Springs 108, 108 'are provided between the adjustment of each workpiece and all groups together housing 83 and the outermost housing 84, men check the entire workpiece.
so that the outer housing 84 is held at a distance from the workpiece output section 14 according to the adjustment housing 83 and there is a front roller tension for the probe head 104, as well as an idle roller tension for the probe head 104, and the 122 and a pair of drive rollers 123, which are supported by the lower part pressed against the moving workpiece. The drive rollers will. The springs 108, 108 'are each on the one 123 are arranged by drive motors 119 at the side of the vertical turn determined by the pins 87 of a suitable drive, for example a plane. The 20 of a chain wheel drive 120 is driven in all directions. Outer moving probe head 104 laterally follows due to lifting arms 124 are pivotable on the base 121 of its biasing the workpiece, although the arm is fixed and actuated by cylinder 127, 105, which supports the probe head 104, fixedly relative so that the workpieces from the output section to one such movement is. 14 are lifted off and into the partition 15

A solenoid operated control valve 109 will roll in 25 after exiting the test station

is pneumatic with the cylinder 107 for the purpose.

connected to the controller. A solenoid coil 109 g s In F i. 1, the workpiece separating device of the control valve 109 is connected to a limit switch 100 device 4 tubs or receptacles AD , which are connected to the workpiece, which is formed for the purpose of fixing a vertical storage container part 135, and to the slide 102. Inclined portions 136 are on the tops of the stigt. The switch 100 has an actuating arm attached to vertical parts 135 and bridges the 99, which protrudes into the path of movement of the workpiece between each of the receiving cradles. An AD in the input part of the machine. Gate parts 137-139 extend over the stepping workpiece moving the arm 99 and thereby top of the tubs AC on the sides and to the switch 100. The switch 100 then causes 35 the center of the tub group. The gate parts 137-; 139 that the solenoid coil 109 s is excited and that are attached to shafts 140-142 and rotate the control valve O9 is actuated. The control valve 109 with their corresponding. Waves between another actuates the adjusting cylinder 107, which extends its raised or open position (FIG. 5) and a piston rod, and the probe head 104, lowered or closed position (FIG. 3). The gene moves the workpiece, which is now '40 gate parts 137-139 are in their closed position of the test station 13 is. When the workpiece lungs in overlapping relation to the inclined completely passes through the test station, the bed parts 136 are inclined diagonally and form a contact arm 99 again released and the switch continuous inclined frame with them, so that 100 interrupted, so that the current of the Solenoid applied to the pick-up group work pieces spool 109 5 is interrupted and the adjustment cylinder 45 by rolling along the pick-up group which lifts the probe head 104 into a position in which to move by gravity and in the first one of the head away from the path of travel of the tub of trays AC that is open or in the workpiece. the tub D when none of the gate parts 137-139

A group of marks 110 is also raised from it.

carried by the adjustable slide. The movement of the gate parts 137-139, which includes a motor 111 which rotatably opens and closes the trays AC , is carried by the carriage 102, and the main control device 152 is controlled by a carbide. The control cutter 112 is arranged on the shaft of the motor 111 and the upper device 152 therefore determines the fault condition half of the workpiece 18. A spring 113 is placed on each tested workpiece and classifies the cutting tool 112 in such a way that it is accordingly located at a distance from the workpiece 18 as "good", "in use." A cash ”or as a“ committee ”. Normally, cylinder 114 is arranged on the slide 102 and has all the gate devices 137-139 and has a piston rod that is closed with one.

Flange 115 above the cutting tool 112 If a workpiece is classified as "good",

is connected and causes cutting tool 60 to become either gate 137 or gate 138

112 is pressed against the workpiece each time, depending on the preselection, so that the workpiece

when cylinder 114 is directed into either tub A or B through its control valve 116. if

is operated. the workpiece is determined to be "usable"

In the main control stage 152 control means are opened in front of the gate 139 and the workpiece is in the

seen which routed cylinder 114 into action 65 tub C each time. If the workpiece is used as an »

If a fault is classified on the factory sheet, none of the gates 137

piece is detected, for the purpose that the Feh- opened to 139 and the workpiece falls into the

Create is marked. open tub D.

Claims (7)

Patent claims: 1. Test system for elongated cylindrical workpieces, in which the workpieces in their Longitudinal direction on a test head provided in a test station by means of feed rollers in front of and behind the test station located feed device are moved past, both in the horizontal as well as in the vertical direction with respect to a base frame resiliently are stored and held in engagement by opposing rollers, thereby characterized in that the resilient mounting of the workpieces by several opposite an elongated base plate (21) resiliently mounted one behind the other as a base frame Feed groups (25) are carried out, which are arranged to be movable independently of one another are that the feed rollers (34) of the feed groups (25) with parallel to each other ao and rotation axes oriented obliquely to the feed direction are arranged that the angular position the axis of rotation of the feed rollers (34) adjustable with respect to the feed direction and that the opposing roles on the one hand feed rollers (34), on the other hand idle rollers (59, 60). 2. Plant according to claim 1, characterized in that the feed rollers (34) are resilient mounted circular rotationally adjustable roller support plates (28) are arranged. 3. Plant according to claim 1 or 2, characterized in that for the idle rollers (59, 60) hold-down devices (56) are provided. 4. Plant according to claim 3, characterized in that the carrier (58) of the idle rollers (59, 60) are pivotable such that the axes of the idle rollers (59, 60) with respect to the Can adjust the direction of movement of the workpieces. 5. System according to one of the preceding claims, characterized in that two feed groups (25) are arranged at a closer distance from one another than the other feed groups (25) and the test head (104) is arranged between these feed groups (25). 6. Plant according to one of claims 2 to 5, characterized in that the roller support plates (28) by means of a common adjusting device (40, 43) for the purpose of adjusting the angle between the axes of rotation of the feed rollers (34) and the direction of movement of the Workpieces are adjustable together. 7. Installation according to one of the preceding claims, characterized in that the test head (104) having a magnetic pick-up coil is arranged in a cardanic housing arrangement which has an outer housing (84), an intermediate housing (85) arranged in the same and an intermediate housing (85) arranged in the latter Inner housing (86) comprises that the inner housing (86) are arranged rotatably with respect to the intermediate housing (85) and the intermediate housing (85) are arranged rotatably with respect to the outer housing (84), the axes of rotation of both housing pairs being perpendicular to one another, and that an adjustment housing (83) is arranged to be movable towards and away from the workpiece and the adjustment housing (83) and the outer housing (84) are movable with respect to one another and spring means (108) are provided between the two housings (83, 84), which bias the outer housing (84) towards the workpiece. For this purpose 2 sheets of drawings